The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2007
Filed:
Oct. 07, 2003
Thomas Young Chang, San Jose, CA (US);
Michael Andrew Parker, Fremont, CA (US);
Thomas Young Chang, San Jose, CA (US);
Michael Andrew Parker, Fremont, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In the present method for manufacturing a magnetic write head a focused ion beam (FIB) tool is utilized to mill the side edges of a Ppole, in order to provide a narrowed track width. Prior to milling, a thin film layer of material is deposited upon the Ppole tip. The milling boxes of the FIB tool are properly aligned upon the layer with reference to the location of the Ppole tip. Milling of the lateral edges of the Ppole tip is then conducted to the appropriate depth, and the layer of material is removed. The resulting Ppole tip has sharp lateral edges, rather than the rounded edges that are produced in prior art FIB processing methods that do not utilize the thin film layer. In a preferred implementation, the FIB tool is utilized first to deposit the thin film layer and thereafter to perform the milling operation.